I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentation

DHP Re-Calibration

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

Two UES Analysis Methods • The next two slides show the two methods in detail. • The difference between the two methods (in words): • S1 uses the ratio of savings from the average house to non-supplemental fuel houses. • S2 uses the ratio of energy use from the average house to non-supplemental fuel houses. • Q: Which one’s better, correct? • Theyseem to offer the same correctness. • S2 aligns better with our guidelines: Determines baseline and efficient case consumptions separately. • The S2 Method will allow us to generate Phase II calibration factors for DHP’s (The S1 Method will not). • The S2 Method aligns with our need to assign a separate “wood heat” adjustment factor to DHP’s. • But they give different answers (especially in HZ3): • Whether we should revisit the DHP UES is out of scope for this presentation.

Proposed Methodology We continue to have no fully satisfying solution. Supplemental fuels use has been a difficult thing to pin down; it still requires a fair amount of judgment for DHP’s.

Step 1 – Apply implied adjustment to DHP • Remember there’s a component of the adjustments that represents unoccupied houses and houses with otherwise misbehaved bills. • We’ll assume DHP houses, on average, have the same results as other heating systems (which are based on RBSA data).

Step 2 – Re-state Known Adjustments • The DHP Pilot data and UES savings methodology does not make adjustments for unoccupied houses or houses with misbehaved bills • We’ll re-calculate the “eFAF, Zonal, HP, or Gas FAF” electric heating adjustments without the implied adjustment: • This is R2.Z from the alternative method above (S2 method), but using RBSA specific data, rather than DHP Pilot data.